The men's Arc'Teryx Long Sleeve Peakline Shirt is a versatile, trim-fitting, long-sleeve shirt which is made of Verdi™ — a blend of soft cotton, and Sonora® — a polymer fibre derived from corn. A long, hip-length profile gives generous coverage and a firm-standing 7-button placket make this a shirt that stands up and gets noticed.

Like the previous user mentioned, this is a slim fitting shirt. That suits my frame just fine as I am a lithe individual, but others may need to size up from normal. Wife got me this shirt for a trip last year and I absolutely loved it.

This is a great shirt. Medium fits me perfect... I am 6'2" and 165lbs. It is a slim fit and the sleeves are long enough (usually not the case in Mediums). Styling is awesome and is perfect for professional wear for anyone with a mountain background! Now I want the short sleeve, too.